Ed put on much weight. And softened? (5)
I believe the answer is:
toned
'softened?' is the definition.
(as in toning something down)
'ed put on much weight' is the wordplay.
'put on' is a charade indicator (letters next to each other).
'much weight' becomes 'ton' (unit of weight).
'ed' after 'ton' is 'TONED'.
'and' acts as a link.
(Other definitions for toned that I've seen before include "Having firm and well-developed muscles" , "Well-muscled" , "Braced" , "Noted (anag.)" , "Slightly tinted; firm-muscled" .)